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import org.junit.jupiter.api.Test;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
class BuildHeapTest {
@Test
void test1() {
int[] data = {5, 4, 3, 2, 1};
List<BuildHeap.Swap> swaps = BuildHeap.getSwaps(data);
assertEquals(3, swaps.size());
assertEquals(1, swaps.get(0).index1);
assertEquals(4, swaps.get(0).index2);
assertEquals(0, swaps.get(1).index1);
assertEquals(1, swaps.get(1).index2);
assertEquals(1, swaps.get(2).index1);
assertEquals(3, swaps.get(2).index2);
}
@Test
void test2() {
int[] data = {1, 2, 3, 4, 5};
List<BuildHeap.Swap> swaps = BuildHeap.getSwaps(data);
assertEquals(0, swaps.size());
}
}
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